clepsydra

[klep-si-druh]
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noun, plural clep·sy·dras, clep·sy·drae [klep-si-dree] /ˈklɛp sɪˌdri/.
  1. an ancient device for measuring time by the regulated flow of water or mercury through a small aperture.

Origin of clepsydra

1640–50; < Latin < Greek klepsýdra, equivalent to kleps- (klep-, stem of kléptein to steal, conceal + -s- formative in derivation) + hydra, derivative of hýdōr water
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018


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British Dictionary definitions for clepsydra

clepsydra

noun plural -dras or -drae (-ˌdriː)
  1. an ancient device for measuring time by the flow of water or mercury through a small apertureAlso called: water clock

Word Origin for clepsydra

C17: from Latin, from Greek klepsudra, from kleptein to steal + hudōr water
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for clepsydra
n.

"ancient Greek water clock," 1640s, from Latinized form of Greek klepsydra, from stem of kleptein "to steal, to hide" (see kleptomania) + hydor "water" (see water (n.1)).

Online Etymology Dictionary, © 2010 Douglas Harper